[entity] Add a cw_related_rqlst method returning the RQL select node of cw_related method
This is useful if one wants to modify the query before execution.
A bit a PEP8 style fix in tests along the way.
Related to #12306543.
.. _urlrewrite_module:
:mod:`cubicweb.web.views.urlrewrite`
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.. automodule:: cubicweb.web.views.urlrewrite
.. autoclass:: URLRewriter
:show-inheritance:
:members:
.. autoclass:: SimpleReqRewriter
:show-inheritance:
:members:
.. autoclass:: SchemaBasedRewriter
:show-inheritance:
:members: